baber/WOPTO huggingface dataset:
Patent RO-118400-B1 (RO)
Title: Extrusion process and extrusion head with ultrasonic activation
Inventor: ICLĂNZAN TUDOR ALEXANDRU
IPC: B29C48/30
Filed: 1997-10-15
Abstract: The invention relates to an extrusion process and an extrusion head for processing viscous-elastic material plasticized by extrusion or by extrusion-blowing. According to the invention, with a view to making the temperature values uniform within the exit cross section of the die, during the stage of formation of the extruded profile, the central element of the extrusion head is subjected to ultrasonic activation which, during a first stage, makes the flowing of the molten material passing through the die easier, while during the next stage, in the exit section of the die, the material is heated as a consequence of the conversion of the ultra-acoustic energy into thermal energy, the thermal field in the exit section of the extrusion head being made uniform. The extrusion head for applying the claimed process comprises a wave adapter ultrasonic concentrator (C) accomodating and supporting a magnetostrictive or piezoelectric ultrasonic transducer (B), the concentrator consisting of a body (1) on the top point of which an interchangeable tip (2) is mounted by screwing.
Patent RO-118239-B1 (RO)
Title: Cable connection box
Inventor: ROOSEN DIRK
IPC: H02G15/013
Filed: 1997-01-23
Abstract: The invention relates to a cable connection box comprising: a) at least two parts of housing (3) which form a cavity (15) for containing a sealing material (5) when put together in use, one or more cables extending in the connection box through this cavity (15); b) said sealing material (5) being contained in the cavity (15) when the two housing parts (3) are put together and which make the sealing between the cable or cables and the housing part or parts (3); and c) at least one resilient element (7) which is contained in the cavity (15) in use, so that putting the housing parts (3) together in use determines the compressing  of the element or each resilient element (7) thereby determining the element or each resilient element (7) to exert, by its elasticity,  a compressing force upon the sealing material (5), characterized in that it further comprises one or more elongate sealing elements (23) which, in use seal between the faces of the opposing edges (25) of the housing parts (3) and which, for achieving the sealing, contact the sealing material (5) from the cavity (12).
Patent RO-117384-B1 (RO)
Title: Fatty acid composition for preparing colloidal systems
Inventor: HUTUTUI PAUL
IPC: C11C1/02
Filed: 1999-06-30
Abstract: The invention relates to a fatty acid composition for preparing colloidal systems employed in the preparation of consistent greases. According to the invention, the composition comprises up to 2% a mixture of fatty acids having a chain of up to 14 carbon atoms, 20...30% saturated fatty acids having a chain of 16 carbon atoms, 3...5.5% unsaturated fatty acids having a chain of 16 carbon atoms, C16:1, 20...30% saturated fatty acids having a chain of 18 carbon atoms, 32...36% unsaturated fatty acids having a chain of 18 carbon atoms, C18:1, 6...11% unsaturated fatty acids having a chain of 18 carbon atoms, C18:2,  0.2...1.5% unsaturated fatty acids having a chain of 18 carbon atoms, C18:3, up to 1.5% a mixture of fatty acids having a chain of 20...22 carbon atoms, the percentage being expressed by weight.
Patent WO-0106249-B1 (WO)
Title: Systeme et complexe de reconnaissance au moyen de semi-conducteur organique
Inventor: KIEL JOHNATHAN L
IPC: C12Q1/68
Filed: 2000-06-30
Abstract: Dans un système complexe de reconnaissance, on couple de manière fonctionnelle des ligands d'acides nucléiques comprenant des séquences d'ADN aléatoires, à un semi-conducteur organique, et on les répartit de manière à former une matrice de complexes de reconnaissance. Lorsque l'on applique un analyte chimique ou biologique inconnu sur la matrice, les propriétés électriques et/ou photochimiques d'au moins l'un de ces complexes de reconnaissance sont modifiées lors de la liaison du ligand d'acide nucléique à l'analyte. Le degré de changement des propriétés électriques et/ou photochimiques varie en fonction de l'affinité de la séquence du ligand d'acide nucléique, à l'égard de l'analyte. On peut utiliser les changements électriques et photochimiques associés à la matrice, comme un tout, en tant que signature unique destinée à identifier l'analyte. Dans certains modes de réalisation, on peut utiliser un procédé répété de sélection et d'amplification de ligands d'acides nucléiques qui se lient à l'analyte, afin de produire une nouvelle matrice dotée d'une plus grande affinité et spécificité à l'égard de l'analyte cible, ou pour produire au moins un ligand d'acide nucléique possédant une affinité de liaison élevée à l'égard d'un analyte. L'invention concerne encore des procédés de préparation de ligands d'acides nucléiques qui se lient à un analyte, en raison d'une forte affinité, et d'utilisation de tels ligands pour neutraliser ledit analyte.
Patent WO-0231101-B1 (WO)
Title: Bioréacteur non métallique et ses utilisations
Inventor: WILKINSON LOY
IPC: C12M1/00
Filed: 2001-10-10
Abstract: La présente invention concerne un système à culture unicellulaire autoclavable comprenant des parois souples transparentes, un diffuseur d'oxygène interne, et une crépine pourvue d'une pluralité d'orifices. L'invention concerne également une station d'élevage piscicole ou aquacole intégrant ce système à culture.
Patent WO-02058935-B1 (WO)
Title: Tete d'impression d'un seul tenant a fibres optiques et a diodes electroluminescentes organiques, dotee de filtres colores
Inventor: GAUDIANA RUSSELL A
IPC: B41J2/46
Filed: 2001-12-21
Abstract: Tête d'impression compacte légère capable d'impression directe de quasi-contact, qui comporte une structure à filtres colorés et à diodes électroluminescentes organiques (OLED) placée sur un substrat sous forme de fenêtre d'entrée en fibres optiques. La structure filtres colorés OLED comporte une structure OLED émettant sur une large plage de longueurs d'onde et des groupes de filtres colorés qui transmettent sélectivement le rayonnement dans différentes plages distinctes de longueurs d'onde. Ladite tête d'impression est conçue pour l'impression de contact ou de quasi-contact. La configuration de cette tête permet d'obtenir la netteté désirée des pixels et une diaphonie réduite. Deux configurations différentes possibles de ladite tête d'impression sont décrites. Dans une configuration, la tête comporte au moins un groupe d'éléments OLED et au moins un groupe de filtres colorés. Chaque groupe de filtres colorés de cette configuration comporte au moins un triplet de filtres colorés, et chaque élément dans chacun des triplets est capable de transmettre un rayonnement dans une plage de longueurs d'onde distincte différente de la plage de longueurs d'onde distincte des deux autres filtres colorés du même triplet. Dans la seconde configuration, la tête d'impression comporte au moins un triplet de groupes d'éléments OLED individuellement adressables et au moins un triplet de groupes d'éléments filtres colorés, chaque groupe OLED du triplet étant en relation de transmission effective de lumière avec la surface réceptrice de lumière d'un groupe de filtres colorés du triplet, constituant ainsi une série de groupes OLED filtres colorés. Dans cette seconde configuration, chaque groupe de filtres colorés de chaque triplet possède des éléments qui sont capables de transmettre un rayonnement dans une plage de longueurs d'onde distincte différente de la plage de longueurs d'onde distincte des deux autres groupes du triplet.
Patent WO-03008050-B1 (WO)
Title: Roue de patin en ligne
Inventor: YOUNG CHARLES
IPC: A63C17/22
Filed: 2002-07-18
Abstract: L'invention concerne une roue de patin en ligne en polyuréthanne comprenant une plate-forme étroite pourvue d'un corps de bandage en polyuréthanne à parois latérales se courbant axialement vers l'intérieur et passant d'une épaisseur importante à une épaisseur moins importante au niveau de l'interface du rebord de la plate-forme. Dans un mode de réalisation, la plate-forme est constituée de sections bloquées par le biais de dispositifs de verrouillage adhésifs ou mécaniques.
Patent WO-03030645-B1 (WO)
Title: Systeme et procede relatifs a un processus de transfert dans un seul plan d'ebauches d'amuse-gueule
Inventor: BELL BRIAN KEITH
IPC: A21C15/00
Filed: 2002-10-04
Abstract: L'invention porte sur un système et un procédé relatifs à un processus de transfert dans un seul plan d'ébauches d'amuse-gueule passant d'un premier convoyeur (32) de grillage à un deuxième convoyeur (42). On utilise à cet effet au niveau de la décharge du premier convoyeur (32) un rouleau (38) d'un diamètre sensiblement plus proche de celui du rouleau (44) de saisie du deuxième convoyeur (42). On peut ainsi se passer des dispositifs mécaniques soulevant les chips présentes sur le premier four de grillage. De plus, on maintient l'alignement dans un même plan des ébauches passant d'un convoyeur à l'autre.
Patent WO-2004052487-B1 (WO)
Title: Recipient de stockage et de distribution de fluide en forme de parallelepipede rectangle
Inventor: BRESTOVANSKY DENNIS
IPC: B01D53/02
Filed: 2003-11-25
Abstract: L'invention concerne un appareil de stockage et de distribution de fluide comprenant un récipient de stockage et de distribution de fluide en forme de parallélépipède rectangle ainsi qu'un ensemble armoire à gaz intégré comprenant ledit appareil de stockage et de distribution de fluide et/ou un laveur de gaz de ventilation au point d'utilisation dans l'armoire à gaz ventilée. L'utilisation d'un milieu adsorbant physique et d'un milieu sorbant chimique permet d'améliorer la sécurité de fonctionnement de ladite armoire à gaz, p. ex. lorsque le gaz de traitement provenant de cette armoire à gaz est un gaz à caractère toxique ou bien dangereux.
Patent AT-502405-B1 (AT)
Filed: 2005-10-24
Granted: 2007-03-15
Abstract: Method involves heating with a partial heating load after the ignition phase before reaching the flow temperature. The partial heating load is a function of the external temperature and room temperature. The gradient of the flow temperature is recorded and the partial heating load is adjusted depending upon the gradients.
Patent BG-63528-B1 (BG)
Title: Method for the preparation of beta-lactam antibiotic-containing orally administered batched forms
Inventor: SUBRANDS JAN G
IPC: A61K31/431
Filed: 1997-08-08
Abstract: The method can be applied for the preparation of granulate comprising orally administered beta-lactam antibiotic with 1:10 solubility in water. It comprises wetting of the components and preparation of granulate with water solution containing no considerable amounts of the binding substance for wet granulation. The invention also relates to orally administered batch forms containing the said antibiotic in granular form, cellulose product and decomposing means which is quickly dispersed when placed in a water medium. The invention also relates to a method for the preparation of the batch forms. 3 claims
Patent BG-62596-B1 (BG)
Title: Rotamase enzymic activity inhibitors
Inventor: STEINER JOSEPH P
IPC: A61P25/28
Filed: 1998-04-28
Abstract: The invention relates to a method for the use of specifically formulated neurotrophic compounds which are derivatives of the pipecolinic acid and have affinity to FKBP-type immunophillines as inhibitors of the enzymic activity related to immunophilline proteins. In particular they can be used as inhibitors of peptitidylprolysomerase or rotamase enzymic activity for the stimulation or assisting the growth and the regeneration of neurons. 20 claims
Patent BG-63873-B1 (BG)
Title: Substituted pyrazol-3-ylbenzazoles
Inventor: ZAGAR CYRILL
IPC: C07D413/04
Filed: 1999-07-05
Abstract: The compounds are used as herbicides, as plant desiccators/defoliants. They have the formula where R1 is H, C1-C4 alkyl, C1-C4 halogenalkyl; R2 is cyano, C1-C4 alkyl, C1-C4 halogenalkyl, C1-C4 alkoxy, C1-C4 halognalkoxy, C1-C4 alkylthio, C1-C4 halogenalkylthio, C1-C4 alkylsulphynyl, C1-C4 halogenalkylsulphynyl, C1-C4 alkylsulphonyl, or C1-C4 halogenalkylsulphonyl; R3 is H, halogen, CN, nitro, C1-C4 alkyl or C1-C4 halogenalkyl; R4 means H, halogen, R5 is H, CN, halogen, C1-C4 alkyl, C1-C4 halogenalkyl, C1-C4 alkoxy or C1-C4 halogenalkoxy; Z is the group of -N = C(XR6)-O- or -N=C(XR6)-S- which is bound by the nitrogen, oxygen or sulphur to alpha; X is chemical bound, oxygen, sulphur, -SO- or -SO2-, -NH- or -N(R7)-; R6 & R7 mean C1-C4 alkyl, Ci-C6 halogenalkyl, cyano-C1-C4 alkyl, hydroxy-C1-C4 alkyl, C3-C6 alkenyl, cyano-C3-C6 alkenyl, C3-C6 halogenalkenyl, C3-C6 alkynyl, cyano-C3-C6 alkynyl, C3-C6 halogenalkynyl, C1-C4 alkoxy-C1-C4 alkyl, C1-C4 halogen-alkoxy- C1-C4 alkyl, C3-C4 alkenylalkoxy- C1-C4 alkyl, C3-C4 alkynylalkoxy- C1-C4 alkyl, C3-C8 cycloalkoxy- C1-C4 alkyl, amino- C1-C4 alkyl, C1-C4 alkylamino C1-C4 alkyl, di (C1-C4 alkyl)amino- C1-C4 alkyl, C1-C4 alkyl, C1-C4 alkylthio- C1-C4 alkyl, C1-C4 halogenalkylthio cicualkyl,  C3-C4 alkenylthio- C1-C4 alkyl, C3-C4 alkynylthio- C1-C4 alkyl, C1-C4 alkylsulphynyl- C1-C4 alkyl, C1-C4 halogensulphynyl- C1-C4 alkyl, C3-C4 alkenylsulphynyl- C1-C4 alkyl, C3-C4 alkynylsulphynyl- C1-C4 alkyl, C1-C4 alkylsulphonyl- C1-C4 alkyl, C1-C4 halogenalkylsulphonyl- C1-C4 alkyl, C3-C4 alkenylsulphonyl- C1-C4 alkyl, C3-C4 alkynylsulphonyl- C1-C4 alkyl, hydroxycarbonyl- C1-C4 alkyl, C1-C4 alkoxycarbonyl- C1-C4 alkyl group which can be substituted with CN or C1-C4 alkoxycarbonyl group, (C1-C4 alkyl)thiocarbonyl- C1-C4 alkyl, aminocarbonyl- C1-C4 alkyl, C1-C4 alkylaminocarbonyl- C1-C4 alkyl, di(C1-C4 alkyl)-aminocarbonyl- C1-C4 alkyl, di(C1-C4 alkyl)phosphonyl- C1-C4 alkyl, C1-C4 alkoxyimino- C1-C4 alkyl, C3-C4 alkynyloxyimino- C1-C4 alkyl optionally substituted C3-C8 cycloalkyl, C3-C8 cycloalkyl, phenyl, phenyl- C1-C4 alkyl, 3- to 7-member heterocyclyl or heterocyclyl- C1-C4 alkyl where every cycloalkyl or heterocyclic ring can contain CO- or CS- as a member in the ring; when X means chemical bond -O-, -S-, -NH- or -N(R7)-, R6 can also mean C1-C4 alkylcarbonyl, C1-C4 halogenalkylcarbonyl, C1-C4 alkoxycarbonyl, C1-C4 alkylsulphonyl or C1-C4 halogenalkylsulphonyl; when X means simple chemical bond R6 can also mean CN, SH, amino, halogen, -CH2-CH(halogen)-R8, -CH=CH-R8 or -CH=C(halogen)-R8 where R8 is COOH, C1-C4 alkoxycarbonyl, C1-C4 alkylthiocarbonyl, CONH2, C1-C4 alkylaminocarbonyl and di(C1-C4 alkyl) aminocarbonyl or di(C1-C4 alkyl) phosphonyl; or R6 & R7 optionally mean the substituted chain 1.3-propylene, tetramethylene, pentamethylene or ethyleneoxyethylene. The invention also relates to their salts. 16 claims
Patent BG-65859-B1 (BG)
Inventor: PYSTYNEN JARMO
IPC: A61K31/502
Filed: 2002-10-08
Abstract: Изобретението се отнася до терапевтично активни съединения с формула@@в която R1 до R4 означават водород, алкил, алкенил, арил, арилалкил, карбоксиалкил, хидроксиалкил или халогеналкил, или R2 и R3 образуват пръстен с 5-7 въглеродни атома, R5 до R9 означават водород, алкил, алкенил, арил, арилалкил, ацил, хидрокси, алкокси, алкоксикарбонил, амино, ациламино, алкиламино, арилокси,  халоген, циано,нитро, карбокси, алкилсулфонил, сулфонамидо или трифлуорометил, при което всеки посочен арилен остатък, самостоятелно или като част от друга група, може да бъде заместен, и до техните фармацевтично приемливи соли и естери. Съединенията повишават чувствителността на контрактилните протеини на сърдечния мускул спрямо калция и са приложими при лечението на конгестивната сърдечна недостатъчност.
Patent BG-66296-B1 (BG)
Title: Method for processing and storage of potatoes
Inventor: VASILEV VLADIMIR
IPC: A23L19/12
Filed: 2008-05-28
Abstract: The method finds application in food industry and in food products trading. The potatoes are cleaned for a period of 30 to 45 s, during which the top, rough layer of the potatoes is removed along with the dust particles that have stuck to it by cold water evenly sprayed over the rotating potatoes. The peeled potatoes are washed and placed in a bathtub with water then they are placed in another bathtub with aqueous solution of potassium metabisulphite food grade (E 224), in a ratio of 0.800 g/1000 l at a temperature of 18 to 20 degrees C, whole or pre-cut and sized 0.9/0.9 mm, 10/10 mm, 10/12mm, cut into four or into discs of different thickness, for 1 to 2 min. Then they are removed, drained and dried with air streams at a temperature of 22 to 25 degrees C for about 8 to 10 min to remove from them the remaining moisture. The product so processed is packed up and vacuumed, and is kept at a temperature of 6 to 9 degrees C.
Patent BG-66846-B1 (BG)
Title: Fuel production method by means of pyrolysis of waste tires and/or plastics and cleaning devices implementing the method
Inventor: ILIEV LYUDMIL
IPC: C10G1/10
Filed: 2013-07-02
Abstract: The invention relates to a fuel production method, in particular heating fuel, by means of pyrolysis of waste tires and/or plastics and cleaning devices implementing the method. The method is mainly characterized by the fact that the precipitations in each of the steam pipes (1.1) of the reactor (1) are periodically cleaned by a cleaning device (4), as the precipitations fall back into the reactor (1), and the precipitations on each respective pipeline (2) to discharge the steams from the reactor are periodically cleaned by a device (5) for cleaning pipelines mounted on side of the reactor (1), as the precipitations fall into the absorbers (3). The devices (4 and 5) for cleaning the pipelines (2) for steam discharge and for cleaning the steam pipes (1.1) of the pyrolysis reactor (1) implement the method. 7 claims, 5 figures A declaration of license readiness has been submitted in accordance with Art. 30 of the Law on Patents and Utility Model Registration.
Patent CH-713282-B1 (CH)
Title: Verfahren zum Betreiben eines strukturierten Netzes zur Verteilung von elektrischer Energie.
Inventor: MONIKA FREUNEK
IPC: H02J3/00
Filed: 2016-12-23
Abstract: Bei einem Verfahren zum Betrieben eines Strukturierten Netzes (11) zur Verteilung von elektrischer Energie, wobei ein vorhandenes Netz (11), welches als Netzkomponenten mindestens Quellen , Lasten, Leitungen, Sensor-, Schalt- und Wandlerkomponenten umfasst, die in einer Ausgangstopologie miteinander verschaltet sind, strukturiert wird, werden anhand von Eigenschaftsgrössen der Netzkomponenten und vorgebbaren Regelgrenzen die Netzkomponenten in einer Mehrzahl von lokalen, sich selbst regelnden Funktionsgruppen (30.1, 30.2, 30.3) zusammengefasst. Jeder lokalen Funktionsgruppe (30.1, 30.2, 30.3) werden Regelprozesse zugeordnet, welche Aktionen umfassen, welche beim Erreichen von Auslösekriterien zur Einhaltung der Regelgrenzen ausgeführt werden. Das Verfahren führt - ausgehend von einem vorhandenen Netz zur Verteilung von elektrischer Energie - zu einem hinsichtlich der Regelung neu strukturierten Netz, welches in Bezug auf die Regelung auf eine hierarchische Struktur soweit möglich verzichtet und stattdessen aus lokalen, sich im Normalbetrieb selbst regelnden Funktionsgruppen (30.1, 30.2, 30.3) aufgebaut ist. Dadurch ergibt sich unter anderem eine Reduktion der Fehleranfälligkeit und dadurch Erhöhung der Betriebs- und Versorgungssicherheit.
Patent CH-705731-B1 (CH)
Title: Vorrichtung und Verfahren zur kapazitiven Bestimmung eines Füllstandes eines Fluids in einem Behälter.
Inventor: VOLKER DREYER
IPC: G01F23/26
Filed: 2011-11-04
Abstract: Die Erfindung betrifft eine Vorrichtung zur kapazitiven Bestimmung eines Füllstandes eines Fluids (7) in einem aus einem elektrisch isolierenden Material gefertigten Behälter (1), mit einer Sensorelektrode (41), mit mindestens einer Schutzelektrode (42), und mit einer Elektronikeinheit (5), welche die Sensorelektrode mit einem Steuersignal beaufschlagt, und welche von der Sensorelektrode ein Antwortsignal empfängt und aus dem Antwortsignal den Füllstand bestimmt. Die Erfindung zeichnet sich dadurch aus, dass die Sensorelektrode und die Schutzelektrode in eine Wandung des Behälters eingebracht und/oder auf einer dem Fluid abgewandten Aussenfläche der Wandung des Behälters derart aufgebracht sind, dass sich die Sensorelektrode und die Schutzelektrode zumindest von einer Höhe eines minimalen Füllstandes bis zu einer Höhe eines maximalen Füllstandes erstrecken, oder dass die Sensorelektrode im Wesentlichen auf einer Höhe eines zu bestimmenden Grenzfüllstands angeordnet ist und dass die Schutzelektrode derart angeordnet ist, dass die Schutzelektrode die Sensorelektrode zumindest teilweise bedeckt. Weiterhin bezieht sich die Erfindung auf ein entsprechendes Verfahren.
Patent EP-1148464-B1 (EP)
Inventor: BRITTLING RUDOLF M
IPC: G09F9/33
Filed: 2000-04-19
Granted: 2004-07-21
Abstract: The device has a coating of a material that luminances under the action of electrical energy mounted on a transparent or translucent bearer, especially a plastic foil, an electrical drive device connected to the coating and a display motif associated with the bearer foil (2). The motif is in the form of symbols (3) of luminescent material that are separately individually connected to the drive device (6) by electrical conductors (4,5).
Patent EP-1157867-B1 (EP)
Inventor: BEETZ KLAUS DR
IPC: H05B1/02
Filed: 2000-05-23
Granted: 2002-12-18
Abstract: The electric heater has several heating elements assembled to form a heating block mounted in a rectangular frame and a controller forming a unit with the heating block and with power transistors (11) on a circuit board (10) for setting the currents to the individual heating elements. A busbar (13) feeds current from a connection bolt (8b) to the individual power transistors.
Patent EP-1106904-B1 (EP)
Inventor: UHRIG WOLFGANG
IPC: F17D5/02
Filed: 2000-10-14
Granted: 2005-09-28
Abstract: In a fixture for ascertaining pressure losses in a pressure line (3) which can be blocked for a selectable unit of time by means of shut-off valves (11, 13), in which the consumers (4, 5) are connected to the pressure line (3) and the pressure line (3) is provided with a pressure watchdog (15), the blocked pressure line (3) can have an adjustable quantity of the enclosed pressurised medium supplied into it via a branch line (24) for a unit of time, and the pressure watchdog (15) is provided with a circuit (31) by means of which the pressure line (3) can be controlled depending on the operating status of the pressure watchdog (15). By means of this embodiment, it is possible with only a very minor scope of circuitry to test the pressure line (3) at any time or at selectable time intervals and, depending on the measurement result, to resume the supply to the consumers (4, 5) or to deactivate the pressure line (3).
Patent EP-1106047-B1 (EP)
Inventor: WOLTERS NORBERT
IPC: A01D43/08
Filed: 2000-12-02
Granted: 2006-03-08
Abstract: Intake and plucking arrangements (10) are configured symmetrically to each other. The intake arrangement includes conveyor disks (26,34) rotating about an upright axis, each disk having the corresponding teeth to grasp the stalks of fruit-bearing plants to cause the plant to move along a desired path. The plucking arrangements are located in such paths to separate the fruit from the stalk. Upper transport elements (14) are located above and coupled for rotation with the corresponding conveyor disks, each element including a leading surface shaped to have a rejecting conveying characteristic.
Patent EP-1089077-B1 (EP)
Inventor: DITTER JEROME
IPC: B01D69/06
Filed: 1995-03-03
Granted: 2003-08-27
Abstract: Highly asymmetric polymeric membranes with large pores which yield bubble points in the range of 0.5 to 25 psid and superior flow characteristics. The membranes can be cast from both metastable dispersions and from homogenous casting formulations. The technique of synthesis involves exposure of the cast membrane to humid air to create large surface pores on the exposed side.